code: def test_empty_print(self):
      factor = Categorical([], Index(["a", "b", "c"], dtype=object))
      expected = "[], Categories (3, object): ['a', 'b', 'c']"
      actual = repr(factor)
      assert actual == expected
  
      assert expected == actual
      factor = Categorical(
          [], Index(["a", "b", "c"], dtype=object), ordered=True
      )
      expected = "[], Categories (3, object): ['a' < 'b' < 'c']"
      actual = repr(factor)
      assert expected == actual
  
      factor = Categorical([], [])
      expected = "[], Categories (0, object): []"
      assert expected == repr(factor)
  
imports: import numpy
  import pytest
  from pandas._config import using_pyarrow_string_dtype
  from pandas import Categorical, CategoricalDtype, CategoricalIndex, Index, Series, date_range, option_context, period_range, timedelta_range
label_desc: Use image node_id 2 for calling the TestCategoricalRepr obj's underlying member method code with example usage: obj.test_empty_print() without return types